<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript" src="../static/js/jquery-1.12.4.min.js"></script>
		<link href="../static/bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="stylesheet">
		<script src="../static/bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>
		<style>
			div {
				margin-top: 200px;
				margin-left:40%;
				width: 400px;
				height: 400px;
				border: 1px solid royalblue;
			}
		</style>
	</head>

	<body>

		<div>
			<button class="btn btn-success">按钮</button>

		</div>
	</body>

</html>